What Are Cookies?
Cookies are small text files stored in your browser when you visit a website. They serve various purposes: keeping you logged in, remembering preferences, tracking usage patterns, and delivering personalized advertising.
Cookies We Use
Essential
Required for the site to function. These cannot be disabled. They include session identifiers set by the hosting infrastructure for security and CDN performance. No personal data.
Functional (localStorage)
We use browser localStorage (not technically a cookie, but similar in purpose) to store your calculation history and saved problems locally. This never leaves your browser. You can clear it via browser settings.
Advertising (Google AdSense)
Google AdSense may set cookies to serve personalized ads. These cookies collect browsing data across sites. You can opt out via Google's ad settings at adssettings.google.com.
Analytics
We may use aggregated analytics to count page visits and understand which calculators are most used. If analytics cookies are used, they collect no personally identifiable information.
Managing Cookies
You can control cookies through your browser settings. Most browsers allow you to view, delete, and block cookies. Note that blocking essential cookies may affect site functionality.
To opt out of Google advertising cookies specifically: visit adssettings.google.com. To opt out of all Google Analytics tracking: use the Google Analytics opt-out browser add-on.